Transformers: Dark of the Moon is now available at retail (at least in the US) starting today. The movie comes in two versions - 1-disc DVD and combo pack of 1 Blu-ray + DVD + Digital Copy. Note this is for the movie only. There are no special features. The 3D Blu-ray Ultimate pack with special features is expected to be released in time for Christmas (the combo packs comes with $10 off coupon for this).
With Blu-ray release you have variations of covers. There is the Wal-Mart exclusive Sentinel Cover (unclear if it’s a combo pack) and the Best Buy Bumblebee & Shockwave slip cover. There are rumors of other case versions but not have heard of them being released stateside.
The sale prices have all been around $19.99 for the Blu-ray combo pack and $17.99 for just the DVD. So far the cheapest I have seen the combo pack is $17.99 at Best Buy and Fry's. If you are interested in just renting the movie for video on demand streaming the price is $4.99 for HD and $3.99 for SD. Personally I am going to skip spending any money and just wait it out for the Ultimate Pack.